Incandescent lamp



J. JUDGE.

INCANDESCENT LAMP.

APPLXCATION map JUNEZB. m9.

1,340,054. Patented May 11, 1920.

ATTORNEY UNITED STATES JOHN JUDGE, OF NEW YORK, N. Y.

INCANDESCENT LAMP.

Specification of Letters Patent.

Patented May 11, 1920.

Application filed June 26, 1919. Serial No. 306,769.

To all whom it may concern: m

Be it known that I, JOHN JUDGE a citlzen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Incandescent Lamps, of which the following is a specification.

This invention relates to improvements in incandescent lamps and has for one of the principal objects to provide a reflecting surface within the limbs of a. filament, so that the rays of light may he diff used in the most efficient manner.

A further object of the invention is to secure the reflector to the stem of the lamps now in use, thereby greatly reducing the cost of manufacturing a reflector lamp.

To these ends the invention consists in the novel details of construction and combination of parts more fully hereinafter described and particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate like parts in all the views:

Figure 1 is a side elevational view of my improved lamp with parts broken away and parts in section;

Fig. 2 is a side elcvational view of the reflector;

Fig. 3 is a View of a modified form of my im roved lam n the drawings 1 represents the globe of the lamp, 2 the usual screw threaded part for connection to the lighting fixtures and 4.- the leading-wires which project through the same for the purpose of establishing communication with the filaments 5.

In the form shown in Fig. l the. reflector comprises the body portion 10, the goosencck stem 11, the open-ended screw threaded tubular neck portion 12 and the outwardly flaring head portion 13. The body of the reflector is corrugated as shown, for the purpose of providing a series of powerful and uniform concave reflecting surfaces. By reason of the open-ended screw threaded neck portion 12, the reflector may be detachably secured to the screw-threaded portion 14 on the stem of the lamp and by reason of the goose-neck stem 11 being located at one bowed side of the neck the reflector can be readily attached and detached without interfering with the filaments of the lamp which are first bunched together to permit the ready connection of the reflector to the stem. After the reflector has been secured to posi tion the filaments are allowed to assume their normal position as shown in the drawings. By reason of the outwardly flaring head portion 13 being formed on the upper end of the reflector. a snug fit is formed within the inner upper end of the lamp and by providing the head with a coating of quicksilver an additional reflecting surface is obtained.

In the modification shown in Fig. 3, the body of the reflector is shown provided with lateral concave reflecting surfaces 21 and a bottom concave reflecting surface 22 for the purpose of obtaining a more powerful concentrated, focus.

It is obvious that those skilled in the art may vary the details of construction and arrangements of parts without departing from the spirit of my invention and, therefore, I do not wish to be limited to such features except as may be required by the claims.

\R hat I claim is 1. In an incandescent lamp having a stem with leadingdn wires embedded therein. a tubular member detachably mounted in the lamp and having at one end a laterally bowed goose-neck portion and a reflector carried by said 'oose-neck portion.

2. In an incandescent lamp having a stem with leading-in wires embedded therein, a tubular member detachably mounted on the stem and having at one end a flaring reflector portion and at its other end a laterally goose-neck portion and a reflector carried by said goose-neck portion.

3. In an incandescent lamp having a stem with leading-in wires embedded therein, a tubular detachable Iriembcr mounted on said stem and a reflector carried by said member.

4. In an incandescent lamp having a stem with leadingin wires embedded therein, a threaded portion on said stem, an interiorly threaded member adapted to co-act with the threaded portion of said stem, and a reflector carried by said member.

JOHN JUDGE. 

